The Danubia 25x35mm Brass Pocket Telescope has been designed with history in mind, as the traditional and timeless design has worked throughout the centuries. This Danubia by Dorr pocket telescope is popular for nature viewing , and target practice but is easily collapsable to fit in a pocket, making it a very handy piece of equipment to have around. The high 25x magnification ensures great images of distant object and the 35mm objective lens, allows plenty of light into the barrel. 5 year warranty included.